As a member of ISA, you are entitled to download ISA Standards free, for your own personal use.
As a member of the Mining & Metals Industries community, you will probably be especially interested in these:
- ISASP18, Instrument Signals and Alarms
- ISASP77.60, Human Machine Interface
- ISASP88, Batch Control Systems
- ISASP95, Enterprise/Control Integration Committee
- ISASP100, Wireless Systems for Automation
- ISASP 101, Human-Machine Interface